MICR-4010 Lecture Notes - Lecture 11: Alpha Diversity, Fecal Microbiota Transplant, Beta Diversity
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Community: self contained group of interacting organisms in the same habitat. Rank abundance curves - measure richness and evenness indices/estimators: Measure probability that two indiv selected from environ would be the same. If you have 100 indivs how would everything look at 1000. Rank from most abundant to least abundant when plotting alpha diversity. Ex. fecal transplant (microbiome before and after) Compare how similar or different communities are to eachother. Based on counting and comparing shared taxa or otus b/w communities. Either unweighted (+/-) or weighted (accounts for abundance of each otu) Take into account relative abundance inside taxa. Ordination plot = statistical way to look at variation b/w samples. Dendrogram - like phylogenetic tree and measures distance. Factors that influence comm structure: turnover/turnover rate. Replacement/subst of indivs or species in habitate. Turnover rate = how fast community changes. Functional redundancy = duplicated functions/redundant functions carried by more than one species within community.